<!DOCTYPE html>
<html>
	<head>
		<meta charset="utf-8">
		<title></title>
	</head>
	<body>
	</body>
	
	请输入答案：<input type="" name="" id="" value="" />
	<br>
	参考答案：2333333;
	
	<script type="text/javascript">
		document.body.oncopy=function(){
			alert(" porhibit copy ");
			event.preventDefault();
			return;
		}
		
		function fun(){
		alert("prohibit paste");
		event.preventDefault();
		return;
		}
			
		
	</script>
</html>
